California earthquakes

M1.6 earthquake 2km SSW of Anza, CA

A magnitude 1.6 earthquake struck 2km SSW of Anza, CA on Sun, Sep 28, 2003, 3:39 AM PDT (10:39 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M3.5 13km N of Yucca Valley, CA. This one was a foreshock.

Anza forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.6 (ML, local (Richter)), micro
Magnitude from
Southern California Seismic Network
Local time
UTC
2003-09-28 10:39:24 UTC
Depth
12.2 km (7.6 mi), shallow
Epicenter
33.541° N, 116.680° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
31°
Stations used
53

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 194 in the 60 days after this one and 94 in the 30 days before it.

After

  1. 2.014km N of Pine Valley, CA · 8407 days ago · 8 km deep · 68 km away
  2. 1.526km ENE of Pine Valley, CA · 8406 days ago · 5 km deep · 76 km away
  3. 1.52km NNW of Cabazon, CA · 8406 days ago · 10 km deep · 45 km away
  4. 1.719km ESE of Anza, CA · 8406 days ago · 13 km deep · 19 km away
  5. 2.124km W of Westmorland, CA · 8405 days ago · 13 km deep · 96 km away
  6. 1.621km ESE of Anza, CA · 8404 days ago · 13 km deep · 21 km away
  7. 1.69km NNW of Cabazon, CA · 8404 days ago · 13 km deep · 52 km away
  8. 1.64km SE of Loma Linda, CA · 8404 days ago · 17 km deep · 74 km away
  9. 1.618km SW of La Quinta, CA · 8403 days ago · 12 km deep · 22 km away
  10. 1.59km W of Morongo Valley, CA · 8403 days ago · 12 km deep · 56 km away
  11. 2.66km N of Big Bear City, CA · 8403 days ago · 6 km deep · 87 km away
  12. 1.518km N of Yucca Valley, CA · 8403 days ago · 3 km deep · 85 km away
  13. 2.410km S of Idyllwild, CA · 8403 days ago · 13 km deep · 13 km away
  14. 1.915km S of Joshua Tree, CA · 8403 days ago · 9 km deep · 61 km away
  15. 1.520km ESE of Anza, CA · 8402 days ago · 6 km deep · 21 km away
  16. 1.610km E of Yucaipa, CA · 8402 days ago · 17 km deep · 61 km away
  17. 3.08km NNW of Ocotillo Wells, CA · 8402 days ago · 12 km deep · 61 km away
  18. 1.65km NNE of Big Bear City, CA · 8402 days ago · 6 km deep · 86 km away
  19. 1.526km NE of Pine Valley, CA · 8401 days ago · 9 km deep · 74 km away
  20. 1.722km ESE of Anza, CA · 8401 days ago · 12 km deep · 22 km away
  21. 1.514km NNE of Borrego Springs, CA · 8401 days ago · 9 km deep · 39 km away
  22. 1.63km NW of Calimesa, CA · 8401 days ago · 16 km deep · 63 km away
  23. 1.510km E of Big Bear City, CA · 8401 days ago · 10 km deep · 78 km away
  24. 1.63km ENE of Calimesa, CA · 8400 days ago · 16 km deep · 60 km away
  25. 1.99km WNW of Garnet, CA · 8400 days ago · 14 km deep · 44 km away
  26. 1.96km SE of Valle Vista, CA · 8400 days ago · 14 km deep · 25 km away
  27. 1.57km SE of Loma Linda, CA · 8399 days ago · 11 km deep · 71 km away
  28. 1.86km SSW of Redlands, CA · 8399 days ago · 11 km deep · 71 km away
  29. 2.07km SE of Loma Linda, CA · 8399 days ago · 12 km deep · 71 km away
  30. 1.67km N of Moreno Valley, California · 8399 days ago · 10 km deep · 70 km away
  31. 1.67km SE of Loma Linda, CA · 8399 days ago · 12 km deep · 71 km away
  32. 2.29km NNE of Ocotillo Wells, CA · 8399 days ago · 8 km deep · 66 km away
  33. 1.63km ENE of Calimesa, CA · 8398 days ago · 16 km deep · 60 km away
  34. 1.78km SW of Corona, CA · 8398 days ago · 7 km deep · 94 km away
  35. 1.815km S of Joshua Tree, CA · 8397 days ago · 10 km deep · 61 km away
  36. 3.117km N of Borrego Springs, CA · 8397 days ago · 11 km deep · 30 km away
  37. 1.61km NE of Loma Linda, CA · 8397 days ago · 15 km deep · 78 km away
  38. 1.66km S of Redlands, CA · 8397 days ago · 14 km deep · 69 km away
  39. 3.513km N of Yucca Valley, CA · 8396 days ago · 1 km deep · 79 km away · felt by 47
  40. 1.812km N of Yucca Valley, CA · 8396 days ago · 2 km deep · 79 km away
  41. 1.76km N of Big Bear City, CA · 8396 days ago · 2 km deep · 88 km away
  42. 1.75km NNE of Big Bear City, CA · 8396 days ago · 5 km deep · 86 km away
  43. 1.75km SSE of Loma Linda, CA · 8396 days ago · 17 km deep · 73 km away
  44. 1.711km SE of Anza, CA · 8396 days ago · 11 km deep · 10 km away
  45. 1.97km SSE of Loma Linda, CA · 8395 days ago · 4 km deep · 71 km away
  46. 1.713km N of Yucca Valley, California · 8395 days ago · 1 km deep · 79 km away
  47. 1.710km ENE of Pala, CA · 8395 days ago · 4 km deep · 32 km away
  48. 1.920km ESE of Anza, CA · 8395 days ago · 6 km deep · 21 km away
  49. 1.631km N of Yucca Valley, California · 8394 days ago · 8 km deep · 96 km away
  50. 1.65km SSW of Banning, CA · 8394 days ago · 12 km deep · 44 km away
  51. 1.76km NNE of Moreno Valley, CA · 8394 days ago · 13 km deep · 68 km away
  52. 1.84km SSW of Yucca Valley, CA · 8393 days ago · 7 km deep · 63 km away
  53. 1.912km NNW of Borrego Springs, CA · 8392 days ago · 7 km deep · 32 km away
  54. 3.49km SSE of Yucca Valley, CA · 8391 days ago · 11 km deep · 61 km away · felt by 196
  55. 1.613km NNE of Cabazon, CA · 8391 days ago · 13 km deep · 53 km away
  56. 1.66km S of Mentone, California · 8391 days ago · 14 km deep · 67 km away
  57. 1.612km NNE of Trabuco Canyon, CA · 8391 days ago · 10 km deep · 82 km away
  58. 1.73km ESE of Yucca Valley, CA · 8391 days ago · 9 km deep · 68 km away
  59. 1.611km NNE of Julian, CA · 8390 days ago · 15 km deep · 44 km away
  60. 1.613km S of Joshua Tree, CA · 8390 days ago · 10 km deep · 62 km away

The first 60 of 194.

Before

  1. 1.59km NNE of Indio, CA · 8408 days ago · 5 km deep · 54 km away
  2. 1.78km NNE of Beaumont, CA · 8409 days ago · 14 km deep · 57 km away
  3. 1.75km SSE of Loma Linda, CA · 8409 days ago · 18 km deep · 73 km away
  4. 1.76km N of Beaumont, CA · 8409 days ago · 11 km deep · 56 km away
  5. 1.96km NNW of Fontana, CA · 8409 days ago · 5 km deep · 100 km away
  6. 1.66km N of Fontana, CA · 8409 days ago · 4 km deep · 99 km away
  7. 1.93km ESE of Yucca Valley, CA · 8409 days ago · 11 km deep · 68 km away
  8. 1.535km N of Yucca Valley, California · 8409 days ago · 1 km deep · 99 km away
  9. 1.716km E of Borrego Springs, CA · 8410 days ago · 8 km deep · 53 km away
  10. 1.610km ESE of Desert Hot Springs, CA · 8410 days ago · 6 km deep · 52 km away
  11. 1.710km N of Big Bear Lake, CA · 8410 days ago · 6 km deep · 91 km away
  12. 1.68km E of Yucaipa, CA · 8410 days ago · 13 km deep · 59 km away
  13. 1.55km NNE of Big Bear City, CA · 8410 days ago · 5 km deep · 86 km away
  14. 1.810km NNE of Ocotillo Wells, CA · 8410 days ago · 11 km deep · 64 km away
  15. 1.610km NNE of Indio, CA · 8410 days ago · 5 km deep · 55 km away
  16. 1.59km N of Cabazon, CA · 8410 days ago · 14 km deep · 52 km away
  17. 1.612km NNW of Borrego Springs, CA · 8410 days ago · 6 km deep · 31 km away
  18. 1.76km SSE of Banning, CA · 8411 days ago · 15 km deep · 41 km away
  19. 1.85km NNE of Big Bear City, CA · 8411 days ago · 6 km deep · 86 km away
  20. 1.64km SSE of Loma Linda, CA · 8412 days ago · 17 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci13994440. Read Mon, Oct 5, 2026, 1:41 PM UTC.